Impulse Control - ABB OTM C Series Installation And Operating Instruction

M OTO R I Z E D C H A N G E - O V E R A N D T R A N S F E R S W I TC H E S , OT M _ C

8.1.1 Impulse control

When using impulse control, the change-over switch is operated by electric impulses. When you press
the control button, the change-over switch is driven to the corresponding position (I, 0, II). The control
impulse must last more than 100ms to take effect. A new command cannot be given until the change-
over switch has reached the position of the previous command. Figure 8.3 shows the operation of the
change-over switch with impulse control.
If a new command is given before the switch has reached the position of the pre-
vious command, the fuse (F1) may operate.
Information
>100 ms
I - position
0 - position
I+II ( CL)
_
Figure 6.3
II -position
Figure 8.3 Impulse control
3.
Operate the motorized change-over switch with the push-buttons or selector switch via impulse
control or continuous control.
I
I - command
Impulse control
II
>100 ms
II - command
0
I+II
( CL)
_
>100 ms
0 - command
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